Update Crashlytics and Crashlytics NDK changelogs (firebase#1129)

Update copy, fix links.

Author: mrwillis21

firebase-crashlytics-ndk/CHANGELOG.md

@@ -1,14 +1,26 @@
 # 17.0.0-beta01
 
-This release includes the initial beta release of Firebase Crashlytics's NDK crash reporting SDK.
+This release includes the initial beta release of the Firebase Crashlytics
+SDK for NDK crash reporting.
 
-If you previously used the legacy Fabric SDK for NDK crash reporting, you can consider this release as a new major version of the SDK which includes artifact name changes and improvements to APIs. **The following release notes describe these changes to the SDK.**
+The Firebase Crashlytics SDK for NDK is a new version of the Crashlytics
+SDK for NDK crash reporting built _without_ Fabric and instead built entirely on
+Firebase. This new SDK has new and improved APIs as well as an artifact name
+change. The following release notes describe changes in the new SDK.
 
-- If you're using Crashlytics for NDK crash reporting in your app for the first time, first follow the [getting started instructions](https://firebase.google.com/docs/crashlytics/get-started?platform=android).
- - If you're upgrading from the legacy Fabric SDK to the Firebase Crashlytics SDK, first follow the [upgrade instructions](https://firebase.google.com/docs/crashlytics/upgrade-sdk?platform=android).
+ - If you're using Crashlytics for NDK crash reporting in your app for the
+ first time, follow the [getting started instructions](/docs/crashlytics/get-started-new-sdk?platform=android).
+ - If you're upgrading from the legacy Fabric SDK to the
+ Firebase Crashlytics SDK for NDK crash reporting, follow the
+ [upgrade instructions](/docs/crashlytics/upgrade-sdk?platform=android)
+ to update your app with the following SDK changes.
 
-The following changes are only relevant to Crashlytics NDK users who are upgrading from a previous Crashlytics NDK version:
-
- - [changed] Crashlytics NDK crash reporting will now start automatically when the Crashlytics NDK dependency is included in your app. 
- - [changed] The Crashlytics Gradle plugin has new tasks to support uploading symbol files to Crashlytics servers. See the [Crashlytics Gradle plugin documentation](https://firebase.google.com/docs/crashlytics/ndk-reports) for more information.
+Note: The following changes are only relevant to Crashlytics NDK users who
+are upgrading from the legacy Fabric SDK.
 
+ - [changed] Crashlytics NDK crash reporting will now start automatically
+ when the Crashlytics NDK dependency is included in your app.
+ - [changed] The Crashlytics Gradle plugin has new tasks to support
+ uploading symbol files to Crashlytics servers. See the
+ [Crashlytics Gradle plugin documentation](/docs/crashlytics/ndk-reports-new-sdk)
+ for more information.

firebase-crashlytics/CHANGELOG.md

@@ -1,14 +1,28 @@
 # 17.0.0-beta01
 
-This release for Firebase Crashlytics includes the initial beta release of the Firebase Crashlytics SDK.
+This release for Firebase Crashlytics includes the initial beta release of
+the Firebase Crashlytics SDK.
 
-If you previously used the legacy Fabric SDK for Crashlytics, you can consider this release as a major versioning of the Fabric SDK which includes an SDK name change and improvements to APIs. **The following release notes describe these changes to the SDK.**
+The Firebase Crashlytics SDK is a new version of the Crashlytics SDK
+built _without_ Fabric and instead built entirely on Firebase. This new SDK has
+new and improved APIs as well as an artifact name change.
+The following release notes describe changes in the new SDK.
 
- - If you're using Crashlytics in your app for the first time, follow the [getting started instructions](https://firebase.google.com/docs/crashlytics/get-started?platform=android). 
- - If you're upgrading from the legacy Fabric SDK to the Firebase Crashlytics SDK, follow the [upgrade instructions](https://firebase.google.com/docs/crashlytics/upgrade-sdk?platform=android) to make the required changes in your app to accommodate the SDK changes described in the following release notes. 
+ - If you're using Crashlytics in your app for the first time, follow the
+ [getting started instructions](/docs/crashlytics/get-started-new-sdk?platform=android).
+ - If you're upgrading from the legacy Fabric SDK to the
+ Firebase Crashlytics SDK, follow the [upgrade instructions](/docs/crashlytics/upgrade-sdk?platform=android)
+ to update your app with the following SDK changes.
 
-The following changes are only relevant to Crashlytics users who are upgrading from a previous Crashlytics version: 
+Note: The following changes are only relevant to Crashlytics users who are
+upgrading from the legacy Fabric SDK.
 
- - [changed] Replaced static methods with new instance methods that are more consistent with other Firebase SDKs and more intuitive to use. The new APIs give your users more control over how you collect their data. 
- - [removed] Removed the Fabric Crashlytics API key. Now, Crashlytics will always use the `google-services.json` file to associate your app with your Firebase project. If you linked your app from Fabric, remove the Fabric API key from your `AndroidManifest.xml` file.
- - [removed] The `fabric.properties` and `crashlytics.properties` files are no longer supported. Remove them from your app.
+ - [changed] Replaced static methods with new instance methods that are more
+ consistent with other Firebase SDKs and more intuitive to use. The new APIs
+ give your users more control over how you collect their data.
+ - [removed] Removed the Fabric Crashlytics API key. Now, Crashlytics
+ will always use the `google-services.json` file to associate your app with your
+ Firebase project. If you linked your app from Fabric, remove the Fabric API key
+ from your `AndroidManifest.xml` file.
+ - [removed] The `fabric.properties` and `crashlytics.properties` files are no
+ longer supported. Remove them from your app.